Fexinidazole is prepared according to a method which comprises the following steps: a) reacting 1-methyl-2-hydroxymethyl-5-nitro-imidazole with methanesulfonyl chloride in the presence of a suspension of powdered alkaline carbonate in an anhydrous organic solvent suitable for performing nucleophile substitution reactions; b) adding to the resulting reaction medium a solution of 4-methyl-mercapto-phenol in the same organic solvent as referred to in step a); c) separating fexinidazole from the reaction mixture as its hydrochloride salt and d) converting said hydrochloride salt into fexinidazole and optionally, purifying the latter.
Fexinidazole是根据以下步骤制备的方法:a)在适合进行亲核取代反应的无
水有机溶剂中,在碱性
碳酸盐粉末悬浮液的存在下,将1-甲基-2-羟甲基-5-硝基
咪唑与甲
磺酰氯反应;b)在所得反应介质中加入4-甲基巯基
苯酚的同一种有机溶剂;c)将fexinidazole作为其盐酸盐从反应混合物中分离出来;d)将该盐酸盐转化为fexinidazole,可选择性地对后者进行纯化。